Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: gi-gdk (user goal)
[__0] rejecting: gi-gdk-4.0.2 (conflict: pkg-config package gtk4-any, not
found in the pkg-config database)
[__0] rejecting: gi-gdk-4.0.1, gi-gdk-3.0.23, gi-gdk-3.0.22, gi-gdk-3.0.21,
gi-gdk-3.0.20, gi-gdk-3.0.19, gi-gdk-3.0.18, gi-gdk-3.0.16, gi-gdk-3.0.15,
gi-gdk-3.0.14, gi-gdk-3.0.13, gi-gdk-3.0.12, gi-gdk-3.0.11, gi-gdk-3.0.10,
gi-gdk-3.0.9, gi-gdk-3.0.8, gi-gdk-3.0.7, gi-gdk-3.0.6, gi-gdk-3.0.5,
gi-gdk-3.0.4, gi-gdk-3.0.3, gi-gdk-3.0.2, gi-gdk-3.0.1, gi-gdk-0.3.18.15,
gi-gdk-0.3.18.14, gi-gdk-0.3.18.13, gi-gdk-0.3.18.12, gi-gdk-0.3.16.12,
gi-gdk-0.3.18.10, gi-gdk-0.3.16.11, gi-gdk-0.3.16.10, gi-gdk-0.3.16.9,
gi-gdk-0.3.16.8 (constraint from user target requires ==4.0.2)
[__0] fail (backjumping, conflict set: gi-gdk)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-gdk